<!DOCTYPE html> 
<html>
<head>
<style type="text/css">
#minHeight{
	min-height: 100px;
	width: 50px;
	height: 50px;
	background-color: gold;
	margin:10px;
}
#maxHeight{
	max-height: 50px;
	width: 100px;
	height: 100px;
	background-color: silver;
	margin:10px;
}
</style>
</head>
<body>
<div id="minHeight"></div>
<div id="maxHeight"></div>
</body>
</html> 